diff --git a/package.json b/package.json
index 11e50b6..4464cdc 100644
--- a/package.json
+++ b/package.json
@@ -23,6 +23,6 @@
     "promise": "^7.0.1",
     "semver": "^4.3.3",
     "serve-favicon": "~2.1.3",
-    "socket.io": "^1.3.5"
+    "socket.io": "^4.0.0"
   }
 }